Lock-up for printers



(No Model.)

A. T. H.'BROWER. LOOK-UP FOR PRINTERS FORMS.

No. 596,845. Patented Jan. 4, 1898,

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. a face view of said quoin.

UNITED STATES ABRAHAM T. H. BROWVER, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 596,845, dated January 4, 1898.

Application filed August 31, 1896. Serial No. 604,389. (No model.) i

To all whom, it may concern:

Be it known that I, ABRAHAM T. H. BROWER, a citizen of the United States, and a resident of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Means for Locking up PrintersForms, of which I do declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

The present invention has for its object the provision of improved means whereby printers forms may be tightly locked up and whereby the parts may be secured against accidental slipping or becoming loosened.

With this object in view the invention consists, first, in the improved construction of quoins adapted to be engaged by a suitable locking device, and, second, in the improved locking device herein described, illustrated in the drawings, and particularly defined in the claims at the end of this specification.

Figure 1 is a plan view of a printers chase with the form locked therein by my improved mechanism. Fig. 2 is a view in side elevation of one of my improved quoins. Fig. 3 is Fig. 4.- is a perspective view of said quoin. Fig. 5 is aview in central vertical section through the improved lockin g device, the screw being shown in elevation. Fig. 6 is a face view of the lock ing device.

A designates the chase within which the form B is to be locked.

C denotes the furniture, between which and the chase A are interposed the pairs of quoin-sections D and the locking devices E. Each pair of quoins D consists of two like sections, and each of these sections, as shown, comprises a wed ge-shaped body havinga central rib extending lengthwise thereof, suitable guide-lugs (1 being provided for these ribs at the ends of the quoin-sections in manner well understood in the art. At each side of the central rib d is formed a rack-bar (1 which when the quoin-sections are set together will be engaged by a suitable key in order to efiect the movement of the quoinsections for the purpose of locking up the form. The operation of quoins of this gene1'alcharacter--that is to say, metal quoins formed of wedge-shaped sections having their inclined contiguous faces provided with parallel rack-bars and inclined bearing-ribsis so well known that it does not require further description.

In order to enable quions of this character to be securely retained against accidental loosening incident to the jarring of the press or to the handling of the forms or the like, I provide the rib d with notches d adapted to engage with the locking devices E. The notches d are shown as narrower than the intermediate raised portion (1*, so that when the quoins are first set-together there will be no danger of the raised portions 61 of one quoin-sect'ion interlocking with the notches d of the opposite quoin-section and thus interferin g with the initial movement of the sections. Into one or another of the notches (I will be placed the lug or projecting part c of the locking device or tightener E, the preferred form of which is illustrated more particularly in Figs. 1, 5, and 6 of the drawings. This locking device is shown as comprising a body portion, from one side of which the lug or extension e projects, the opposite side of the body portion being formed with ribs or extensions 6 and c through which passes the screw E. The rib e is threaded to receive the screw E, while the rib d is shown as formed with a hole of sufficient size to permit the screw to pass freely therethrough. The head of the screw d is suitably formed, as with a projecting pin 6 to be engaged by an appropriate W18I1Cl1,Wh1Gbthe screw E may be operated. Preferably the body of the locking device E is formed also with ribs (2 which can be readily engaged by the fingers in order to enable the locking device to be quickly removed when the form is to be unlocked and the quoin-sections are to be sepa rated. I

lVhile I have shown what I regard as the preferred form of locking device, it is manifest that the details of construction of this device may be varied within wide limits without departing from the spirit of my invention.

From the foregoing description the operation of parts will beseen to be as follows: The sections of the quoins D will be set within the chase in the usual manner and may be tightened by means of suitable keys until one or another of the notches d is exposed, so as to receive the lug e of the locking device E. This locking device E will then be set in place, as seen in Fig. 1, and the end of the screw E will be brought to bear against the end of the opposite quoin-section. The locking device will thus serve to prevent any reverse movement or loosening of the quoin-sections, and by the turning of the screw E a further tightening of the quoin-sections may be readily effected. When the form is to be unlocked, the screw IE will be slightly Withdrawn, and the locking device E may then be readily removed. The long body of the locking device bearing, as it does, against the face of the notched rib serves to receive the strain as the screw E is forced against the quoin-section D, since there is a tendency of the locking device to turn about the lug or extension 6 as the end of the screw E is forced against the quoin-section D.

It is obvious that the quoins above described may be used with other forms of looking devices than that shown and that the locking devices above set forth may be employed in connection with a variety of other printers quoinssuch, for example, as the quoin set forth in Letters Patent No. 413,166, granted to me October 22, 1889.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A printers quoin having its face provided with rack-bars and an intermediate raised rib, said rib being notched for engagement with a suitable separable locking device, substantially as described.

2. A printers quoin having its face provided with rack-bars and an intermediate raised rib, said rib being formed with notches of less width than the length of the rib-sections between said notches whereby whentwo quoins are set together the danger of the interlocking of said notched rib-sections will be avoided.

3. A pair of printers quoins having their contiguous inclined faces provided With rackbars and intermediate raised ribs, said ribs being formed with notches, in combination with a lock or tightener comprising a body adapted to engage the notches of said ribs and a screw carried by said body to engage the adjacent end of one of the quoins.

ABRAHAM T. H. BROVER.

Vitnesses:

ALBERTA ADAMIOK, JAMES H. PEIRoE. 

